基于AuNPs-CS/MWCNTs纳米复合材料用于核黄素的检测  

Detection of riboflavin based on AuNPs-CS/MWCNTs nanocomposites

作　　者：尹晓蝶 金丹莉 张博 赵文雅 陈小燕 朱冠阳 顾颖颖[1] 安雅睿[1] YIN Xiaodie;JIN Danli;ZHANG Bo;ZHAO Wenya;CHEN Xiaoyan;ZHU Guanyang;GU Yingying;AN Yarui(College of Science,University of Shanghai For Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学理学院,上海200093

出　　处：《实验室科学》2020年第2期69-73,78,共6页Laboratory Science

基　　金：国家自然科学基金(项目编号:21505092);上海理工大学“教学成果奖”培育项目(项目编号:10-18-113-007);上海理工大学教师教学发展研究重点资助项目(项目编号:CFTD18009Z)。

摘　　要：实验采用金纳米粒子-壳聚糖/多壁碳纳米管纳米复合材料(AuNPs-CS/MWCNTs)修饰电极制备电化学传感器来对核黄素的电化学行为进行了研究。采用透射电镜对AuNPs-CS/MWCNTs纳米复合材料进行表征,采用循环伏安法和差分脉冲伏安法探讨核黄素在AuNPs-CS/MWCNTs修饰的玻碳电极上的电化学行为,并对RF含量进行测定。实验结果表明,AuNPs-CS/MWCNTs修饰电极对RF有良好的电化学活性,其还原峰电流与核黄素的浓度在0.025~10.02μmol/L范围内呈良好的线性关系,检出限为0.015μmol/L。此传感器具有灵敏度高、抗干扰能力强及重现性好等优点,可以很好进行核黄素的检测。The electrochemical sensor was prepared by gold nanoparticle-chitosan/MWCNTs nanocomposites(AuNPs-CS/MWCNTs)modified electrode to detect the electrochemical behavior of riboflavin.The AuNPs-CS/MWCNTs nanocomposites were characterized by transmission electron microscopy.The electrochemical behavior of riboflavin on AuNPs-CS/MWCNTs modified glassy carbon electrode was investigated by cyclic voltammetry and differential pulse voltammetry,and the RF content was measured.The experimental results show that the AuNPs-CS/MWCNTs modified electrode has good electrochemical activity for RF,and the reduction peak current and riboflavin concentration are linear in the range of 0.025~10.02μmol/L.The detection limit is 0.015μmol/L.The sensor has the advantages of high sensitivity,strong anti-interference ability and good reproducibility,and can well detect riboflavin.

关 键 词：电化学传感器 电化学行为 纳米复合材料 金纳米粒子 核黄素 

分 类 号：O657.1[理学—分析化学]